Edmund suckow



(No Model.)

E. SUOKOW.

LIPTING JACK. No. 331,460. Patented Dec. 1, 1885.

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.7.7520772 Jua/J.

N. PETERS. Phuwuuwgmpher. washmgtvn, D, C.

UNITED STATES PATENT OFFICE EDMUND SUOKOV, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO Y HARDWIOKE dt "WARE, OF SAME PLACE.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 331,460, dated December l, 1885.

Application filed September 1, v1885. Serial No. 175,945. (No model.)

To all-whom, it may concern,.-

Be it known that I, EDMUND SUcKow, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Lifting-Jacks, of which the following is a specification.

The object of this invention is to produce a lifting-jack which can be advantageously used for lifting loads in maritime and railroadwrecking, and for similar purposes. Then a vessel runs aground7 it is often possible to set her aoat by slightly lifting the vessel or the portion thereof which is aground.

My invention is designed to provide ready means for accomplishing this purpose; and it consists of the improvements in the construction of the lifting-jack, which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure lis av view showing the application of my improved lifting-jacks to a vessel which has run aground. Fig. 2 is an elevation of my improved liftingjack. Fig. 3 is a sectional 'elevation of the same. Fig. 4 is a fragmentary plan view of the base. Fig. 5 is a vertical section of the same.

Like letters of reference refer to like parts in the several figures.

A represents thebase of the lifting-jack; B, the column of the same, supported on said base, and C the jack-screw, which works in a nut or threaded socket, c, at the upper end of the column. The base A consists of a plate having on its under side marginal flanges a and strengthening-ribs e, and on its upper side a spherical socket, (l, arranged centrally in the plate.

D represents a spherical knuckle attached to the lower end of the column B, and seated in the socket d, and held therein by a cap, d. The lower end of the column B is screwthreaded and secured in a screw-threaded cavity in the knuckle D.

c represent's a pin or stop secured in the cap d', and 'projecting inwardly and into a peripheral groove, f, formed inthe knuckle D, thereby preventing the latter from turning in the Socket d about the axis of the column B, but

permitting the knuckle to turn in the socket with the column, and enabling the latter to assume a greater or less inclined position in either direction, so far as the opening in the cap d will permit such movement of the column. The stop e, by preventing the knuckle from turning in the socket about the axis of the column, holds the knuckle stationary with reference to the column, and permits the lower threaded end of the column to be screwed into the knuckle and to be unserewed therefrom, which would not be possible if the knuckle could freely turn in the socket about the axis of the column.

The column B is composed of tubular sections which are screw-threaded at their ends and connected by screw-threaded sleeves G.

By connecting a suitable number of such sections together a column of the desired height is easily and quickly produced. The jackscrew C, which works in the screw-threaded socket at the top of the upper section of the column, is provided with a left-hand screwthread, so that in turning the jack-screw the screw-couplings of the different sections of the column will not be loosened or unscrewed.

H represents the head of the jack-screw, provided with a fiat-sided portion, h, to which a screwwrench may be applied, and with suitable openings,h, in which bars can be inserted for turning the jack-screw.

I represents a sleeve swiveled loosely on the head H of the jack-screw, and provided with hooks t, to which chains or ropes can be attached for connecting the jack-screw with the load to be lifted.

Vhen my improved lifti ng-j ack is not in use, the column B is unscrewed from the knuckle D in the base A, and the sections of the column are taken apart, thus permitting the apparatus to be stowed away in a small compass in the vessel or wrecking-car in which it is carried. Each vessel is supplied with a suitable number of such lifting-jacks, which are made of a size proportionate to the size of the vessel. A tubular column of from two to three inches in diameter will give good results.

When a vessel runs aground and is required to be lifted or pushed off, one or more liftingjacks of the required length are quickly put together and placed with their' bases A` upon the ground near the grounded portion of the vessel. Upon ahard or rocky bottom the base A,which is constructed of castiron,will afford a sufficiently firm bearing; but on a muddy bottom it may be desirable to increase the bearing-surface by lashing planks to the base, which latter is provided with holes for this purpose. rIhe head H of the jack-screw is then connected in any suitable manner with the portion of the vessel to be lifted, and by turning the jack-screw the vessel is slowly lifted to the required height. By placing two or more of these lifting-jacks on each side of the vessel the latter can be lifted and supported until aleak has been stopped, if necessary, and by placing the jacks in an inclined position the vessel can be pushed off into deep water.

The spherical or universal joint which con` nects the column with the basev permits the latter to rest firmly upon the ground in the various positions of the column, and prevents breakage by bending the column.

The stop e is made,preferably,in the forni of a set-screw, as indicated in the drawings, so that by tightening the set-screw against the spherical knuckle the column can be secured in a vertical or inclined position, if desired.

I claim as rnyinventionl. In alifting-jack, the c0mbination,with the base and jack-screw, of a column supporting the jack-screw and composed of detachable sections, and a spherical joint whereby the column is connected with the base, substantially as set forth.

2. In alifting-jack, the combination,with the jack-screw, of abase provided with a spherical socket and a column provided at its lower end with a detachable spherical knuckle, substantially as set forth.

3. In a lifting-jack, the combination, with the base provided with a spherical socket, of a column having a screw-threaded lower end, a spherical knuckle seated in said socket and provided with a screw-threaded cavity, and a stop whereby the knuckle is prevented from turning in screwing the Column into said cavity and unscrewing it, substantially as set forth.

4. In a lifting-jack, the combination,with the base provided with a spherical socket, of a column provided with a spherical knuckle seated in said socket, and a set-screw whereby the knuckle can be clamped in the socket, substantially as set forth. l

5. The combination, with the base A, having a spherical socket, d, anda stop, e, in the same',

' of the column B and a spherical knuckle, D,

having a spherical groove, f, substantially as set forth.

Vitness my hand this 25th day of August, 1885.

EDMUND suoKoW.

Witnesses:

EDWARD WILHELM, OsoAR SCHAUB. 

